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    • 3. 发明授权
    • Metallocenes and process for the preparation of metallocenes
    • 金属茂和金属茂制备方法
    • US6087515A
    • 2000-07-11
    • US167597
    • 1998-10-07
    • John J. EischYun QianJurgen WeberNicola ZandonaFabian Siberdt
    • John J. EischYun QianJurgen WeberNicola ZandonaFabian Siberdt
    • C07F17/00C08F4/64C08F4/659C08F4/6592C08F10/00C08F110/02C07F7/00
    • C07F17/00C08F110/02C08F4/65908C08F4/65912Y10S526/943
    • A metallocene corresponding to the formula ##STR1## wherein M is a group 4 transition metal, each Y is, independently, selected from the group of halogen, hydrocarbyl and hydrocarbyloxy,R.sup.1, R.sup.4 are, independently, selected from the group of hydrogen, hydrocarbyl, hydrocarbyloxy,R.sup.2, R.sup.3, R.sup.5, R.sup.6, R.sup.7, R.sup.8 are, independently, selected from the group of hydrogen, hydrocarbyl, hydrocarbyloxy, with the provision that, respectively, R.sup.2 and R.sup.3, R.sup.5 and R.sup.6, R.sup.7 and R.sup.8 can be linked to each other.A process for the preparation of metallocenes comprising the following steps:(a) contacting, in a solvent, a transition metal halide of formula MX.sub.4 with an organometallic compound of formula M'R.sub.m, wherein M is a group 4 transition metal, X is a halogen, M' is an element chosen from the groups 1, 2 and 13 of the periodic table, R is hydrogen, an alkyl, aryl, alkenyl or alkynyl group containing up to 20 carbon atoms, m=1 when M' is a group 1 element, m=2 when M' is a group 2 element, m=3 when M' is a group 13 element, in order to reduce M, which leads to a subvalent transition metal halide, (b) purifying the subvalent transition metal halide and (c) contacting the subvalent transition metal halide with at least one fulvene compound.
    • 对应于下式的金属茂其中M是第4族过渡金属,每个Y独立地选自卤素,烃基和烃氧基,R 1,R 4独立地选自氢,烃基,烃氧基, R2,R3,R5,R6,R7,R8独立地选自氢,烃基,烃氧基,其中R2和R3,R5和R6,R7和R8可以相互连接 。 一种制备金属茂的方法,包括以下步骤:(a)在溶剂中使式MX4的过渡金属卤化物与式M'Rm的有机金属化合物接触,其中M是第4族过渡金属,X是 卤素,M'是选自周期表第1,2和13族的元素,R是氢,含有至多20个碳原子的烷基,芳基,烯基或炔基,当M'是基团时,m = 1 1元素,当M'为第2族元素时m = 2,当M'为13族元素时m = 3,以减少M,其导致亚价过渡金属卤化物,(b)纯化亚价过渡金属 卤化物和(c)使亚价过渡金属卤化物与至少一种富烯化合物接触。